21778386

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{518533}}^1$

素因数の和:518545

約数の個数: 16

約数和(自身を含む): 49779264

約数和(自身を除く): 28000878

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 518533, 1037066, 1555599, 3111198, 3629731, 7259462, 10889193, 21778386]

約数ペア:

[(1, 21778386), (2, 10889193), (3, 7259462), (6, 3629731), (7, 3111198), (14, 1555599), (21, 1037066), (42, 518533)]